Disclosures about Fair Value of Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Investment securities available for sale, at fair value	$ 111,518	$ 130,637
U.S. government agencies
Investment securities available for sale, at fair value	155	1,584
Mortgage-backed securities of government sponsored entities
Investment securities available for sale, at fair value	85,830	101,328
Private-label collateralized mortgage obligations
Investment securities available for sale, at fair value	1,106	1,741
State and political subdivisions
Investment securities available for sale, at fair value	24,427	25,984
Fair Value measured on a Recurring Basis \| Fair value \| U.S. government agencies
Investment securities available for sale, at fair value	155	1,584
Fair Value measured on a Recurring Basis \| Fair value \| Mortgage-backed securities of government sponsored entities
Investment securities available for sale, at fair value	85,830	101,328
Fair Value measured on a Recurring Basis \| Fair value \| Private-label collateralized mortgage obligations
Investment securities available for sale, at fair value	1,106	1,741
Fair Value measured on a Recurring Basis \| Fair value \| State and political subdivisions
Investment securities available for sale, at fair value	24,427	25,984
Fair Value measured on a Recurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| U.S. government agencies
Investment securities available for sale, at fair value
Fair Value measured on a Recurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Mortgage-backed securities of government sponsored entities
Investment securities available for sale, at fair value
Fair Value measured on a Recurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Private-label collateralized mortgage obligations
Investment securities available for sale, at fair value
Fair Value measured on a Recurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| State and political subdivisions
Investment securities available for sale, at fair value
Fair Value measured on a Recurring Basis \| Significant Other Observable Inputs (Level 2) \| U.S. government agencies
Investment securities available for sale, at fair value	155	1,584
Fair Value measured on a Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Mortgage-backed securities of government sponsored entities
Investment securities available for sale, at fair value	85,830	101,328
Fair Value measured on a Recurring Basis \| Significant Other Observable Inputs (Level 2) \| Private-label collateralized mortgage obligations
Investment securities available for sale, at fair value	1,106	1,741
Fair Value measured on a Recurring Basis \| Significant Other Observable Inputs (Level 2) \| State and political subdivisions
Investment securities available for sale, at fair value	24,427	25,984
Fair Value measured on a Recurring Basis \| Significant Unobservable Inputs (Level 3) \| U.S. government agencies
Investment securities available for sale, at fair value
Fair Value measured on a Recurring Basis \| Significant Unobservable Inputs (Level 3) \| Mortgage-backed securities of government sponsored entities
Investment securities available for sale, at fair value
Fair Value measured on a Recurring Basis \| Significant Unobservable Inputs (Level 3) \| Private-label collateralized mortgage obligations
Investment securities available for sale, at fair value
Fair Value measured on a Recurring Basis \| Significant Unobservable Inputs (Level 3) \| State and political subdivisions
Investment securities available for sale, at fair value

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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-Publisher FASB

-Name FASB Staff Position (FSP)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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+ Details